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Third Dimension Teaching W\ ^' Material 3 .^r^ ' e these Panda ars Come to Life hrou^h the colored len ses of the ORTHO-SCOPE (furnished free with each boolclet) A Second Set of 'Toot Print" booklets with 3rd Dimension Pictures Modern printing and mass production make this offer possible. Four 16-page Booklets, fibre binding — "Wild Oxen," "Strange Animals," "Monkeys and Apes," "Giants of the Animal Kingdom" — each containing third dimension reproductions of famous animal groups in the Field Museum of Natural History—with each Educational Screen subscription, new, renewed or extended for only 25 cents additional (prac- tically one-third retail price)! A 22-page Teacher's Manual, covering all four booklets and enhancing the teaching value of the set, will be included (while quantity lasts) without charge. Many School and Library lists already include these books, and eminent edu- cators have pronounced them a notable addition to the field of practical aids in visual teaching. Start this valuable series now with this second set of four booklets. USE THIS COUPON to obtain your second set of Third Dimension Teaching Material. WATCH THE EDUCATIONAL SCREEN for further announcements of material on additional subjects. I I I THE EDUCATIONAL SCREEN | 64 East Lake Street | I Chicago, m. I ! renew ) . enter [ my subscription to ' extend > | j THE EDUCATIONAL SCREEN for one year, and for which j^u wiU • also send tnc the second set of 4 books with Third Dimension illustrations | I and a teadier's manual. • . Name | Street or School ' I I City State i ' _ _«